GHK-Cu is a copper-binding peptide known to stimulate collagen production, promote angiogenesis, and activate genes associated with tissue remodeling and wound healing, making it a powerful agent in skin and muscle recovery
The congestion already existed in your skin
The lack of immunogenicity has practical implications: the peptide can be used for extended periods without loss of efficacy due to antibody neutralization, there is minimal risk of allergic or hypersensitivity reactions, and repeated treatment cycles are supported as prior exposure does not sensitize the immune system
That's a significant limitation
Global, regional, and national sepsis incidence and mortality, 19902017: analysis for the global burden of disease study
Assay Development and Validation: Using defined peptide tools to benchmark sensitivity, repeatability, and measurement consistency